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Diffuse Supernova Neutrino Background Search at Super-Kamiokande

Publication ,  Conference
El Hedri, S; Ashida, Y; Giampaolo, A; Abe, K; Bronner, C; Hayato, Y; Hiraide, K; Ikeda, M; Kameda, J; Kanemura, Y; Kataoka, Y; Miki, S ...
Published in: Proceedings of Science
March 18, 2022

We present the results of a search for the Diffuse Supernova Neutrino Background (DSNB) at Super-Kamiokande (SK) that incorporates 22.5 × 2970 kton.days of data from its fourth data-taking phase. Two analyses, with different energy regimes covering the 9.3−81.3 MeV antineutrino energy range, have been developed based on previous SK searches, with substantially improved background modeling and data reduction techniques. Moreover, a combined analysis of nearly 20 years of SK data (1996-2018) has been performed, with a 90% C.L. sensitivity to the DSNB flux comparable to various DSNB predictions. No significant evidence for a DSNB signal has been observed, and both analyses set world-leading limits on the DSNB flux that can reach about 2.7νe.cm−2.s−1 for a wide range of models.

Duke Scholars

Kate Scholberg
Author Kate Scholberg Physics
Christopher Walter
Author Christopher Walter Physics

Published In

Proceedings of Science

EISSN

1824-8039

Publication Date

March 18, 2022

Volume

395
 

Citation

APA
Chicago
ICMJE
MLA
NLM
El Hedri, S., Ashida, Y., Giampaolo, A., Abe, K., Bronner, C., Hayato, Y., … Oyama, Y. (2022). Diffuse Supernova Neutrino Background Search at Super-Kamiokande. In Proceedings of Science (Vol. 395).
El Hedri, S., Y. Ashida, A. Giampaolo, K. Abe, C. Bronner, Y. Hayato, K. Hiraide, et al. “Diffuse Supernova Neutrino Background Search at Super-Kamiokande.” In Proceedings of Science, Vol. 395, 2022.
El Hedri S, Ashida Y, Giampaolo A, Abe K, Bronner C, Hayato Y, et al. Diffuse Supernova Neutrino Background Search at Super-Kamiokande. In: Proceedings of Science. 2022.
El Hedri, S., et al. “Diffuse Supernova Neutrino Background Search at Super-Kamiokande.” Proceedings of Science, vol. 395, 2022.
El Hedri S, Ashida Y, Giampaolo A, Abe K, Bronner C, Hayato Y, Hiraide K, Ikeda M, Kameda J, Kanemura Y, Kataoka Y, Miki S, Miura M, Moriyama S, Nagao Y, Nakahata M, Nakayama S, Okamoto K, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Suzuki Y, Takeda A, Takemoto Y, Takenaka A, Tanaka H, Watanabe S, Yano T, Han S, Kajita T, Okumura K, Tashiro T, Xia J, Megias GD, Labarga L, Marti L, Zaldivar B, Pointon BW, Kearns E, Raaf JL, Wan L, Wester T, Bian J, Griskevich NJ, Kropp WR, Locke S, Mine S, Smy MB, Sobel HW, Takhistov V, Hill J, Kim JY, Lim IT, Park RG, Bodur B, Scholberg K, Walter CW, Bernard L, Coffani A, Drapier O, Gimpaolo A, Gonin M, Mueller TA, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang JS, Learned JG, Cao S, Anthony LHV, Martin D, Scott M, Sztuc AA, Uchida Y, Berardi V, Catanesi MG, Radicioni E, Calabria NF, Machado LN, De Rosa G, Collazuol G, Iacob F, Lamoureux M, Mattiazzi M, Ospina N, Ludovici L, Maekawa Y, Nishimura Y, Friend M, Hasegawa T, Ishida T, Kobayashi T, Jakkapu M, Matsubara T, Nakadaira T, Nakamura K, Oyama Y. Diffuse Supernova Neutrino Background Search at Super-Kamiokande. Proceedings of Science. 2022.

Published In

Proceedings of Science

EISSN

1824-8039

Publication Date

March 18, 2022

Volume

395